NH3 is a weak alkali that does not dissociate fully into its solution. Which of the following is true about NH3?

A. It has a very low pH.
B. It's dissociation is a reversible reaction.
C. It will release all of its OH- ions.
D. It has a high H+ concentration.

North atlantic current or north atlantic drift is the answer

4- c, because all matter stays the same no matter what. it is still there. 5- b, because matter is known as mass. 6-c because, flammability is a chemical property. malleability is changing the shape of an object.

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf